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whatsrust: Instructions file for Claude Code

CLAUDE.md

whatsrust CLAUDE.md is an instructions file for Claude Code from 199-biotechnologies/whatsrust. It costs 648 tokens per session, scanned A, original, MIT.

Project-specific instructions for whatsrust, a Rust program that connects to WhatsApp. They describe its separate WhatsApp library, important source files, and development rules.

In plain words
What is it for?
Use them when modifying whatsrust, especially its bridge, messaging, API, storage, or MCP code, or when working with the separate wa-rs repository.
Why use it?
They give a coding agent the project conventions and boundaries it needs to make compatible changes, including where library changes belong.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is 199-biotechnologies/whatsrust's own configuration. It tells Claude Code how to work on whatsrust itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything whatsrust configures →

not rated 13repo +1 4mo ago A scan 648 tokens original MIT
View source ↗ 199-biotechnologies/whatsrust
Reuse

Borrowing it

Nothing to install: this file belongs to 199-biotechnologies/whatsrust. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/199-biotechnologies/whatsrust/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/199-biotechnologies/whatsrust

Made for: Claude Code.

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README.md
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<a href="https://agentmods.dev/instructions/199-biotechnologies/whatsrust/claude-md"><img src="https://agentmods.dev/badge/instructions/199-biotechnologies/whatsrust/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 648 This file is loaded in full into every session.
When invoked 648 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00648 $0.00648
Opus 5 $0.00324 $0.00324
Sonnet 5 $0.00130 $0.00130
Haiku 4.5 $0.00065 $0.00065

Measured 8d ago against content hash 3e8e21f1bd97, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

whatsrust CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 37 lines

How it starts

The opening of the file, as written. The whole thing — 37 lines — stays where its author put it; the contents beside it link to each section on GitHub.

whatsrust

Pure Rust WhatsApp bridge. Single binary, no Node.js.

wa-rs Dependency (Separate Repository)

  • Fork: 199-biotechnologies/whatsapp-rust (forked from jlucaso1/whatsapp-rust)
  • Local clone: ../whatsapp-rust (sibling directory)
  • Cargo.toml points at the fork with pinned rev. .cargo/config.toml (gitignored) patches to local path for dev.
  • DO NOT modify wa-rs files from this project. If a feature requires wa-rs changes, work in ../whatsapp-rust instead.
  • After pushing wa-rs changes, bump the rev in this project's Cargo.toml.

Key Files

  • src/bridge.rs — core bridge: events, all message types, typing, groups, polls, presence, delivery receipts, group cache
  • src/outbound.rs — typed outbound ops (17 OpKinds), payload structs, execute_job() builds wa::Message + uploads media
  • src/bridge_events.rs — broadcast event bus: BridgeEvent, OutboundStatusEvent, OutboundJobState, DeliveryStatus
  • src/api.rs — REST API server (54 endpoints) + SSE streaming + CLI HTTP client
  • src/mcp.rs — MCP server (30 tools, JSON-RPC over stdio, proxies to HTTP daemon)
  • src/storage.rs — rusqlite Signal Protocol store + typed outbound queue + inbound history + search
  • src/polls.rs — poll crypto (HKDF-SHA256 + AES-256-GCM)
  • src/dedup.rs — generation-tracked DashMap dedup
  • src/read_receipts.rs — batched receipt scheduler
  • src/qr.rs — QR rendering (terminal/PNG/HTML/SVG)
  • src/instance_lock.rs — single-instance file lock
  • src/lib.rs — library crate entry: all modules pub (consumed by habb)
  • src/main.rs — binary: daemon mode (REPL + API) + CLI client (54 commands) + MCP mode

Patterns

  • SQLite-first sends: all 17 ops enqueue to SQLite via enqueue_job(), worker executes via execute_job()
  • enqueue_and_wait() subscribes to broadcast BEFORE enqueue for sync send methods
  • parse_jid() for JID normalization (phone → @s.whatsapp.net, group → @g.us)
  • parking_lot::Mutex<Connection> + spawn_blocking for SQLite
  • extract_content_inner recursive descent for inbound message parsing
  • Schema migrations via version check in Store::new() (currently v7)
  • Token-bucket rate limiter (burst + sustained rate) for anti-ban pacing
  • Chat management ops (pin, mute, archive, mark-read, delete, star) use direct client calls, not the outbound queue
  • Status/story sending (text, image, video, revoke) goes through the outbound queue like regular messages

Read the full file on GitHub · 37 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 37 lines · 648 tokens per session scan A 3e8e21f1bd97

Subscribe to this mod's changes

whatsrust CLAUDE.md is an instructions file published in the GitHub repository 199-biotechnologies/whatsrust (13 stars, last pushed 4mo ago), licensed MIT. It adds 648 tokens to every session, about $0.0032 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

automationchatbotmessagingwhatsappwhatsapp-api
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